They seem to be pleasing people too with one happy customer telling Women's Health, "On my walk back to the office, my butt actually felt tighter, but after 45 minutes of twerking intervals, I'm not surprised. When I got home that night, I took a look in the mirror and saw a glowier derriere, but as far as I could tell, it didn't look lifted."

If you're not interested in having someone spend 75 minutes getting up close and personal with your derriere, you can always try a DIY butt mask or scrub. Plenty of creams are on the market and promise to keep your tush terrific.